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Old 09-06-2016, 09:30 PM   #1
tyler37075
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Default 2015 wrx Pst carbon fiber driveshaft

Took advantage of the rally sport direct Labor Day sale and ordered a pst carbon fiber driveshaft for my 2015 wrx. My first impressions are very positive. The car is more eager to get going from a dead stop. Shifts also seem to be smoother and when I nailed the throttle going through 2nd , 3rd , and a little bit of 4th gear, the car definitely felt stronger!! I have another one coming tomorrow that I will install on my wife's car so I will update this post with her impressions. Update. Installed the wife's and her initial impressions are very positive also. She said it shifts MUCH smoother and definitely feels like it has more power. For what it's worth...her car is stage 1 etune

Last edited by tyler37075; 09-18-2016 at 06:59 PM. Reason: Update
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Old 09-09-2016, 02:11 PM   #2
AkotaHsky
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Originally Posted by tyler37075 View Post
Took advantage of the rally sport direct Labor Day sale and ordered a pst carbon fiber driveshaft for my 2015 wrx. My first impressions are very positive. The car is more eager to get going from a dead stop. Shifts also seem to be smoother and when I nailed the throttle going through 2nd , 3rd , and a little bit of 4th gear, the car definitely felt stronger!! I have another one coming tomorrow that I will install on my wife's car so I will update this post with her impressions.

Do you think its worth the cost to replace it? Do you have other mods on the vehicle?
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Old 09-09-2016, 10:15 PM   #3
tyler37075
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I do believe it's worth the cost. I've had a couple of days now to drive it to work and back and I still believe it was a really good mod. My car is stage 2+ with a couple of suspension mods(group n trans mount,crossmember bushings, and kartboy wedge lock).
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Old 09-14-2016, 10:36 AM   #4
AkotaHsky
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Quote:
Originally Posted by tyler37075 View Post
I do believe it's worth the cost. I've had a couple of days now to drive it to work and back and I still believe it was a really good mod. My car is stage 2+ with a couple of suspension mods(group n trans mount,crossmember bushings, and kartboy wedge lock).
Does it take away the jerkyness at low speeds?

My 2015 is full bolt ons running e85. I have the perrin trans mount, crossmember setup, but nothing on my dif yet.

How was your impressions on the kartboy kit too if you don't me side railing for a moment
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Old 09-14-2016, 02:14 PM   #5
tyler37075
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I thought the kartboy mod was definitely worth it. I would say it really made the car feel more connected. The two mods together will definitely take some of the jerkiness out of the car. Going through the gears makes me smile more now!!
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Old 09-14-2016, 05:21 PM   #6
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Quote:
Originally Posted by tyler37075 View Post
Took advantage of the rally sport direct Labor Day sale and ordered a pst carbon fiber driveshaft for my 2015 wrx. My first impressions are very positive. The car is more eager to get going from a dead stop. Shifts also seem to be smoother and when I nailed the throttle going through 2nd , 3rd , and a little bit of 4th gear, the car definitely felt stronger!! I have another one coming tomorrow that I will install on my wife's car so I will update this post with her impressions.
How much did you end up paying for the driveshaft, OP? Just curious.
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Old 09-14-2016, 06:48 PM   #7
tyler37075
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How much did you end up paying for the driveshaft, OP? Just curious.
$996 + free shipping
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Old 09-14-2016, 05:35 PM   #8
Stall master
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I love my carbon drive shaft
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Old 09-18-2016, 07:01 PM   #9
tyler37075
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Updated my op today
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Old 09-19-2016, 10:14 AM   #10
AkotaHsky
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Updated my op today
Good Stuff!! TY so much for the review. I will add it to my setup.

How hard was install? Was there instructions?
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Old 09-19-2016, 10:55 AM   #11
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I believe these are only available for 6 speed.....if one was aavailable for CVT that would be interesting!!
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Old 09-19-2016, 11:31 AM   #12
tyler37075
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Originally Posted by AkotaHsky View Post
Good Stuff!! TY so much for the review. I will add it to my setup.

How hard was install? Was there instructions?
install takes around 30 minutes and I would consider it easy. There are no instructions with it
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Old 10-14-2016, 04:13 PM   #13
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after some driving time and issues I have had, I feel the need to update this thread. When I installed my pst drive shafts, my wife and I already had the kartboy wedge lock kits installed. My car drove perfect and it was a great improvement. Unfortunately, my wifes car had a good amount of nvh. PST was great to work with and they sent me 2 more drive shafts over the next month to try. No luck with either one. Phasing was not the issue as they were all rotated 90 and 180 degrees. After the last one didn't work, I decided to pull my pst shaft and put it in her car. It was much improved but not perfect and the other shafts had nvh in my car. At my wits end, I pulled the wedge locks out of both cars and all is like new. No nvh at all. The kit comes with 4 rear subframe bushings and I was able to leave them in and just remove the diff locks. I am talking with Tom now at Kartboy to see if we can resolve something. In closing what I have found is these are both good mods. They just don't seem to play well together.
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Old 10-15-2016, 11:12 PM   #14
Boggie1688
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Quote:
Originally Posted by tyler37075 View Post
after some driving time and issues I have had, I feel the need to update this thread. When I installed my pst drive shafts, my wife and I already had the kartboy wedge lock kits installed. My car drove perfect and it was a great improvement. Unfortunately, my wifes car had a good amount of nvh. PST was great to work with and they sent me 2 more drive shafts over the next month to try. No luck with either one. Phasing was not the issue as they were all rotated 90 and 180 degrees. After the last one didn't work, I decided to pull my pst shaft and put it in her car. It was much improved but not perfect and the other shafts had nvh in my car. At my wits end, I pulled the wedge locks out of both cars and all is like new. No nvh at all. The kit comes with 4 rear subframe bushings and I was able to leave them in and just remove the diff locks. I am talking with Tom now at Kartboy to see if we can resolve something. In closing what I have found is these are both good mods. They just don't seem to play well together.

I have the PST driveshaft and I'm getting ready to install a few mods on the rear. The Kart Boy wedge locks are on the list.

Please let me know what you guys end up doing.
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Old 11-04-2016, 01:44 PM   #15
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What ever happened with this?
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Old 11-04-2016, 07:49 PM   #16
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Tom at kartboy was not able to offer any help other than to refund my money which I didn't do. I am still going to try to get the wedge lock kit to work with the pst drive shaft but I have been really busy working on building a garage. Right now I am running the pst drive shaft in Both cars without the wedge lock installed. The carbon fiber drive shaft is SWEET!!!!! I will try to work something out within the next week
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Old 11-11-2016, 01:04 AM   #17
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I'll have to check this out.
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Old 11-11-2016, 11:28 AM   #18
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The bank called, they want to know why you're racing their car.
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Old 11-11-2016, 03:43 PM   #19
tyler37075
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The bank called, they want to know why you're racing their car.
?????
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Old 11-13-2016, 02:21 AM   #20
jolly.unitedperforma
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Good review on this part and nice feedback on comments as Well. You wouldnt think a drive shaft would make that much of a difference but the do.....well done sir ......and im sure the bank has nothing to say to this man about what he does with his car (thats if he even owes on the car 1000 on drive shaft doubt he does lol) its ignorant ass people like you that turned the car scene into the joke it has become ....you put out a solid reveiw thank you and good luck with your shop and to the heckler i give u the one finger salute
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Old 05-24-2019, 10:44 AM   #21
UniqueTII
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Sorry for the thread revival, but were you ever able to get these parts to play nice? I have the PST driveshaft and I'm looking to firm up the diff but I don't want any issues.
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Old 07-20-2019, 04:07 PM   #22
L-Tuned
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Great review. I was on the fence but will be jumping on this
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